Devonian were gas chromatographically analysed for low molecular weight aromatic hydrocarbons. Aromatic hydrocarbons range from 0.5 to 45.6 per cent with benzene, toluene and the xylenes averaging 80 per cent of the aromatic content. Trimethylbenzenes (of which 1,2,4-trimethylbenzene is the most ...
For a pulse of 1.18 cm3 of trimethylbenzene isomers and 40 g of molecular sieves 13X, the effects of pressure, temperature, and flow rate on separation effectiveness were examined. The results indicated that the most appropriate operating conditions for obtaining a higher recovery of each isomer ...
select article Crystal structure, hydrogen bond patterns, Hirshfeld surface analysis, and topological studies (NCI) of 1,5,5-trimethyl-imidazolidine-2,4-dione; an organic compound with high symmetry crystallizing in the tetragonal space group I4/m Research articleAbstract only Crystal structure, hydro...
Wet weight per plant was 1.10 g on average. Identifications based on retention indices and GC-MS: (1) oxalic acid, allyl hexyl ester; (2) bicyclo[3.1.0]hex-2-ene, 2-methyl-5-(1-methylethyl)-; (3) benzene, 1,2,3-trimethyl-; (4) 6-methyl heptanoate; (5) butyl pyruvate; (...
218.34 2- ethoxymethyl-1,1,2-trimethyl indane CAS: NF0142Use(s): information only not used for fragrances or flavors 218.34 solavetivone CAS: 54878-25-0Use(s): natural substances and extractives 218.34 furanoeremophilane CAS: 6750-13-6Use(s): natural substances ...
The molecule 1,3,5-tris(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene (titmb) crystallizes as a monohydrate in the monoclinic space group C2/c with a = 20.888(4), b = 13.220(2), c = 14.385(2) Å, β = 90.36(1)°. Two of three imidazole groups are on one side of the central...
The present invention relates to an ultrahigh-molecular-weight ethylene copolymer powder having an intrinsic viscosity (η) of 10 dl/g to 34 dl/g, obtainable by copolymerizing ethylene and at least one olefin selected from the group consisting of α-olefins having 3 to 20 carbon atoms, cyclic...
All compounds were characterized by partial elemental analysis, cryoscopic molecular weight studies in benzene solution, and NMR and IR spectroscopic data. All three compounds exist as trimeric molecules in solution. NMR spectral data were consistent with the presence of multiple isomers of the trim...
1.9. Aromatic hydroxybenzyl compounds, for example 1,3,5-tris-(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1,4-bis(3,5-di-tert-butyl-4-hydroxybenzyl)-2,3,5,6-tetramethylbenzene, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)phenol. ...
The living cationic polymerization of β-pinene was carried out with α-chloroethylbenzene(PEC)/TiCl4/Ti(OiPr)4 initiating system in CH2C12 at -40℃. After 25 min of reaction(β-pinene conversion~100%),the resulted living poly(β-pinene)... LU Jiang,H Liang,LI Baoen - 高等学校化学学报...